Medical instrument



FIG. 1 is an isometric view of a front, top, and right side of an ornamental design for a medical instrument;

FIG. 2 is a top plan view of the medical instrument of FIG. 1;

FIG. 3 is a right side elevational view of the medical instrument of FIG. 1;

FIG. 4 is a rear elevational view of the medical instrument of FIG. 1; and,

FIG. 5 is a front elevational view of the medical instrument of FIG. 1. 

CLAIM The ornamental design for a medical instrument, as shown and described. 